2140 Kemerovo

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2140 Kemerovo
Discovery [1]
Discovered by L. Chernykh
T. Smirnova
Discovery site Crimean Astrophysical Obs.
Discovery date 3 August 1970
MPC designation (2140) Kemerovo
Named after
Kemerovo Oblast
(Russian federal subject)[2]
1970 PE · 1926 AJ
1940 WB · 1952 BH1
1957 BB · 1973 FY
1974 MP · 1975 NM1
1975 QJ · 1975 RM1
main-belt · (outer)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 64.85 yr (23,688 days)
Aphelion 3.1617 AU
Perihelion 2.8137 AU
2.9877 AU
Eccentricity 0.0582
5.16 yr (1,886 days)
0° 11m 27.24s / day
Inclination 6.9851°
Physical characteristics
Dimensions 29.33 km (derived)[3]
29.49±1.6 km (IRAS:4)[4]
32.11±0.52 km[5]
37.886±0.366 km[7]
9.2±0.6 h (2006)[8]
0.0620 (derived)[3]
0.0887±0.011 (IRAS:4)[4]
P[7] · X (Tholen)[3]
10.9[4][5][7] · 11.3[1][3]

2140 Kemerovo, provisional designation 1970 PE, is a dark asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter.

The asteroid was discovered on 3 August 1970, by Russian female astronomers Lyudmila Chernykh and Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[9] It was named after Kemerovo Oblast in Siberia.[2]

Orbit and classification[edit]

Kemerovo orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,886 days). Its orbit has an eccentricity of 0.06 and an inclination of 7° with respect to the ecliptic.[1]

It was first identified as 1926 AJ at Bergedorf Observatory in 1926. The body's observation arc begins with its first used observation, a precovery taken at Palomar Observatory in 1951, approximately 19 years prior to its official discovery at Nauchnyj.[9]

Physical characteristics[edit]

In the Tholen taxonomy, Kemerovo is a X-type asteroid.[1] The dark body has also been characterized as a rare and reddish P-type asteroid by the NEOWISE mission.[7]


Two rotational lightcurves of Kemerovo were obtained from photometric observations made by French astronomers René Roy, Laurent Bernasconi and Olivier Thizy in August 2001 and July 2006. Both lightcurves gave a rotation period of 9.2±0.6 hours with a brightness amplitude of 0.18 and 0.19 in magnitude, respectively (U=2/2).[8]

Diameter and albedo[edit]

According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite (mid-infrared), and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Kemerovo measures between 29.5 and 37.9 kilometers in diameter, and its surface has an albedo between 0.05 and 0.09.[4][5][7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.062 and calculates a diameter of 29.3 kilometers with an absolute magnitude of 11.3.[3]


This minor planet was named after Kemerovo Oblast, the regional center of the Russian Kemerovo district, and a significant industrial center in Siberia.[2] The official naming citation was published by the Minor Planet Center on 8 February 1982 (M.P.C. 6647).[10]


  1. ^ a b c d e "JPL Small-Body Database Browser: 2140 Kemerovo (1970 PE)" (2016-11-03 last obs.). Jet Propulsion Laboratory. Retrieved 11 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2140) Kemerovo. Springer Berlin Heidelberg. p. 173. ISBN 978-3-540-00238-3. Retrieved 18 May 2016.
  3. ^ a b c d e f "LCDB Data for (2140) Kemerovo". Asteroid Lightcurve Database (LCDB). Retrieved 18 May 2016.
  4. ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 18 May 2016.
  5. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 18 May 2016.
  6. ^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 7 December 2016.
  7. ^ a b c d e f Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 18 May 2016.
  8. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (2140) Kemerovo". Geneva Observatory. Retrieved 18 May 2016.
  9. ^ a b "2140 Kemerovo (1970 PE)". Minor Planet Center. Retrieved 18 May 2016.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 May 2016.

External links[edit]